--- title: "Sonnex Energie SNX-D54HND-430M 430W Solar Panel - Specs & Review | ComparePV" description: "Sonnex Energie SNX-D54HND-430M 430W solar panel. Specs: 22.02% efficiency, Monocrystalline cells, dimensions, warranty and temperature coefficient." source: "https://comparepv.com/panel/sonnex-energie-snx-d54hnd-430m" updated: 2026-09-11 --- # Sonnex Energie SNX-D54HND-430M Middle of its segment, weak in heat 1,218 panels in the segment TOPCon 400-450 W ## Identity - **Manufacturer:** Sonnex Energie - **Model:** SNX-D54HND-430M - **Series:** NeX Series SNX-D54HND (TOPCon Dual Glass Bifacial Module) - **Rated power:** 430 W - **Cell technology:** TOPCon - **Bifacial:** yes ## How it compares Compared against segment TOPCon 400-450 W (1218 panels). | Measure | This panel | Segment median | Standing | Rank | | --- | --- | --- | --- | --- | | Power (Wp) | 430 W | 435 W | Typical | | | Module efficiency | 22.02% | 22.00% | Typical | 6,329 | | Power density | 220.2 | 220.2 | Typical | 6,481 | | Temperature coefficient | -0.320 | -0.290 | Weak - bottom 7% | 8,312 | | Weight (kg) | 24.5 kg | 22.0 kg | Weak - bottom 14% | | | Performance warranty | 30 yrs | 30 yrs | Typical | 21 | ### Full peer table | Measure | This panel | Segment median | Standing | Rank | | --- | --- | --- | --- | --- | | Module efficiency | 22.02% | 22.00% | Typical | 6,329 | | Power density | 220.2 | 220.2 | Typical | 6,481 | | Temperature coefficient | -0.320 | -0.290 | Weak - bottom 7% | 8,312 | | Weight per kWp | 57.0 | 51.4 | Weak - bottom 14% | 10,964 | | Performance warranty | 30 yrs | 30 yrs | Typical | 21 | ### Watch out for - **-0.320 %/°C temperature coefficient** - Bottom 7% of the TOPCon 400-450 W segment, against a median of -0.290. Ranked 8,312th in the whole database. - **57.0 kg per kWp** - Bottom 14% of the TOPCon 400-450 W segment, against a median of 51.4. - **Best for:** Residential and commercial. - **Not ideal for:** Hot climates and weight-limited structures. ## Specification ### Electrical - **Rated power (Pmax):** 430 W - **Efficiency:** 22.02 % - **Voltage at Pmax (Vmp):** 31.90 V - **Current at Pmax (Imp):** 13.50 A - **Open-circuit voltage (Voc):** 38.30 V - **Short-circuit current (Isc):** 14.23 A - **Max system voltage:** 1500 V ### Temperature - **Temperature coefficient of Pmax:** -0.320 %/degC - **Temperature coefficient of Voc:** -0.260 %/degC - **Temperature coefficient of Isc:** 0.046 %/degC - **NOCT:** 42 degC ### Cell and construction - **Cell type:** Monocrystalline - **Cell technology:** TOPCon - **Cell count:** 108 - **Bifacial:** yes ### Physical - **Length:** 1722 mm - **Width:** 1134 mm - **Thickness:** 30 mm - **Weight:** 24.5 kg - **Area:** 1.95 m2 - **Power density:** 220.2 Wp/m2 ### Warranty and degradation - **Product warranty:** 30 years - **Performance warranty:** 30 years - **Output guaranteed at end of warranty:** 87.4 % - **First-year degradation:** 1.00 % - **Annual degradation:** 0.40 % - **Output after 30 years:** 376 W ## Rank in the whole catalogue | Measure | Position | | --- | --- | | Efficiency | 6329 of 14005 | | Power density | 6481 of 14005 | | Temperature coefficient | 8312 of 14005 | | Weight | 10964 of 14005 | | Warranty | 21 of 14005 | ## About this series The Sonnex Energie NeX Series SNX-D54HND is a series of **TOPCon N-type** modules with a **dual glass** and **bifacial** design, specifically engineered for stable operation and higher energy yield throughout the year. The use of N-type cells means **no LID** (light-induced degradation) and better long-term performance, which translates to predictable energy production and reduced risk of disappointment after several seasons. The dual-glass construction also increases resistance to moisture, microcracks, and challenging mounting conditions, making this series well-suited for roofs exposed to loads and installations where durability is paramount. Thanks to its bifacial design, the module can utilize reflected light from the ground - a practical advantage, especially on bright roofs, ground-mounted structures, and carports, where additional energy gain can be easily obtained without expanding the system. The NeX SNX-D54HND also features **long warranties for glass-glass modules**, which distinguishes it from many competing solutions that primarily focus on price. ## Notable figures - At 22.0% efficiency, this panel is on par with typical \*\*TOPCon 400-450W\*\* modules - Power density of 220.2 W/m² matches the \*\*TOPCon 400-450W\*\* median - Temperature coefficient of -0.32%/°C is 0.03pp worse than \*\*TOPCon 400-450W\*\* median (-0.29%/°C) - higher losses in summer heat - At 24.5 kg, this panel is 2.5 kg heavier than the \*\*TOPCon 400-450W\*\* median (22.0 kg) - more demanding for installation crews - #6329 for efficiency, #8312 for temperature performance out of 14005 panels ## Questions ### What does the 30-year warranty on the Sonnex Energie NeX SNX-D54HND panels actually cover? The NeX SNX-D54HND series comes with both a 30-year product warranty and a 30-year linear power warranty — one of the longest guarantees available in its class, made possible by the more durable dual glass construction. After 30 years of operation, the module is warranted to retain at least 87.4% of its nominal 435 W output. Most modules with standard polymer backsheets offer only 12–15 years of product warranty, making this series stand out significantly in terms of investment protection. ### How does TOPCon N-type technology in the NeX series differ from common PERC cells, and does it matter in practice? TOPCon N-type cells are not subject to LID (Light Induced Degradation), which typically causes PERC modules to lose 1–2% of power during the first weeks of operation. The NeX SNX-D54HND delivers its rated output from day one. Additionally, the temperature coefficient of −0.32%/°C means lower power losses on hot summer days compared to P-type cells. The result is more predictable energy production across all seasons. ### Is the NeX SNX-D54HND suitable for pitched roof installation, and is its weight a concern? Yes, the module is compatible with standard racking systems used on pitched roofs. Its 1722×1134×30 mm dimensions are typical for panels in this power class. At approximately 24.5 kg, it is slightly heavier than standard backsheet modules (around 20–22 kg), so it is worth verifying roof load capacity during the design phase. For most well-built residential roofs this is not a limiting factor, but it should be included in the structural assessment. ### How much extra energy can the bifacial rear side of the SNX-D54HND realistically generate, and when does it pay off? Real-world bifacial gain depends on surface albedo and mounting height. On light or white roof surfaces, gravel ballast, and ground-mounted systems you can expect 5–15% additional yield from the rear side. On dark rooftops the gain is minimal. The best conditions for bifacial production are ground mounts and carports where the module sits above a reflective surface — exactly the applications for which the NeX SNX-D54HND series is particularly well suited. ### How do the NeX SNX-D54HND modules perform in winter and under low-irradiance conditions? PV modules perform more efficiently in cool temperatures than in summer heat — lower cell temperature raises open-circuit voltage and instantaneous output. TOPCon technology with a temperature coefficient of −0.32%/°C also maintains strong performance under diffuse irradiance and overcast skies, which are common during Central European autumn and winter months. This results in a more consistent annual energy yield profile compared to older-generation modules. ### Does the dual glass construction of the SNX-D54HND improve durability, and are there any drawbacks? Yes — replacing the polymer backsheet with a second glass layer eliminates the primary moisture ingress path into the laminate, reducing the risk of cell corrosion and micro-cracking under mechanical stress. Dual glass modules handle demanding installation environments and heavy snow or wind loads better than standard backsheet panels. The trade-offs are slightly higher weight and a higher upfront cost, both of which are offset by the extended service life and 30-year product warranty. ## Datasheet [Manufacturer datasheet (PDF)](https://comparepv.com/datasheets/snx-d54hnd415-435m-topcon-dual-glass-all-black-english-1-35789181617e.pdf) ## Alternatives | Panel | Power | How it differs | | --- | --- | --- | | [AIKO AIKO-A480-MAH54Mw](https://comparepv.com/panel/aiko-aiko-a480-mah54mw) | 480 W | +50 W, cooler, +2.1 pp | | [Gokin GK-5-54HG-480M](https://comparepv.com/panel/gokin-gk-5-54hg-480m) | 480 W | +50 W, cooler, +2.1 pp | | [Jinko Solar JKM480N-48QL6-DB-F2-EU](https://comparepv.com/panel/jinko-solar-jkm480n-48ql6-db-f2-eu) | 480 W | +50 W, cooler, +2.0 pp | | [Gamko New Energy GKA96N-PRO-480W](https://comparepv.com/panel/gamko-new-energy-gka96n-pro-480w) | 480 W | +50 W, lighter, +2.0 pp | | [Sonnex Energie SNX-D54HND-415M](https://comparepv.com/panel/sonnex-energie-snx-d54hnd-415m) | 415 W | -15 W, -0.8 pp | | [Sonnex Energie SNX-D54HND-420M](https://comparepv.com/panel/sonnex-energie-snx-d54hnd-420m) | 420 W | -10 W, -0.5 pp | | [Sonnex Energie SNX-D54HN\*\*\*-M-S (425W)](https://comparepv.com/panel/sonnex-energie-snx-d54hn-m-s-425w) | 425 W | Cooler, lighter, -0.2 pp | | [Sonnex Energie SNX-D54HN\*\*\*-M-S (435W)](https://comparepv.com/panel/sonnex-energie-snx-d54hn-m-s-435w) | 435 W | Cooler, lighter, +0.3 pp | | [Sonnex Energie SNX-D54HN\*\*\*-M-S (440W)](https://comparepv.com/panel/sonnex-energie-snx-d54hn-m-s-440w) | 440 W | Cooler, lighter, +0.5 pp | | [Longi Solar LR7-54HJD-510M](https://comparepv.com/panel/longi-lr7-54hjd-510m) | 510 W | +80 W, cooler, +3.0 pp | | [AIKO AIKO-A495-MCE54Mw](https://comparepv.com/panel/aiko-aiko-a495-mce54mw) | 495 W | +65 W, cooler, +2.8 pp | | [Longi Solar LR7-54HJD-505M](https://comparepv.com/panel/longi-lr7-54hjd-505m) | 505 W | +75 W, cooler, +2.7 pp | | [AIKO AIKO-A490-MCE54Mw](https://comparepv.com/panel/aiko-aiko-a490-mce54mw) | 490 W | +60 W, cooler, +2.5 pp | | [Longi Solar LR7-54HJD-500M](https://comparepv.com/panel/longi-lr7-54hjd-500m) | 500 W | +70 W, cooler, +2.5 pp | | [Talesun CIPRO-TN9C54M-500W](https://comparepv.com/panel/talesun-cipro-tn9c54m-500w) | 500 W | +70 W, cooler, +2.5 pp | --- Source: https://comparepv.com/panel/sonnex-energie-snx-d54hnd-430m Not in this file, on the page: the I-V and temperature curves lifted from the manufacturer's datasheet, a thirty-year output simulator and alternatives filtered by how closely they match these dimensions.